/* 
=================================================================
🎮 NEONCHESS DESIGN SYSTEM
Sistema de diseño para ChessArcade
Estilo: Synthwave/Retrowave/80s Arcade
=================================================================
*/

@import url('https://fonts.googleapis.com/css2?family=Orbitron:wght@400;700;900&display=swap');

/* ===============================
   🎨 COLOR SYSTEM
=============================== */
:root {
    /* NeonChess Primary Palette */
    --neon-cyan: #00ffff;
    --neon-magenta: #ff0080;
    --neon-green: #00ff80;
    --neon-orange: #ff8000;
    --neon-blue: #0080ff;
    --neon-purple: #8000ff;
    --neon-yellow: #ffff00;
    --neon-pink: #ff0040;
    
    /* Dark Theme Base */
    --dark-bg: #0a0a0a;
    --dark-secondary: #1a0033;
    --dark-accent: #330066;
    --dark-surface: rgba(0, 0, 0, 0.8);
    --dark-surface-glass: rgba(26, 0, 51, 0.6);
    
    /* Text Colors */
    --text-primary: #ffffff;
    --text-secondary: #e0e0e0;
    --text-accent: var(--neon-cyan);
    
    /* Glow Levels */
    --glow-small: 0 0 10px;
    --glow-medium: 0 0 20px;
    --glow-large: 0 0 30px;
    --glow-extra: 0 0 40px;
    
    /* Spacing System */
    --space-xs: 0.5rem;
    --space-sm: 1rem;
    --space-md: 1.5rem;
    --space-lg: 2rem;
    --space-xl: 3rem;
    --space-xxl: 4rem;
    
    /* Border Radius */
    --radius-sm: 8px;
    --radius-md: 15px;
    --radius-lg: 20px;
    --radius-pill: 50px;
    
    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition-normal: 0.4s ease;
    --transition-slow: 0.6s ease;
}

/* ===============================
   🌟 BASE STYLES
=============================== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

/* Prevent horizontal scroll and over-scroll on all devices */
html {
    overflow-x: hidden;
    width: 100%;
    /* Removed height: 100% - was preventing scroll beyond viewport */
}

body {
    background: linear-gradient(135deg, var(--dark-bg) 0%, var(--dark-secondary) 50%, var(--dark-accent) 100%);
    color: var(--text-primary);
    font-family: 'Orbitron', monospace;
    min-height: 100vh;
    overflow-x: hidden;
    line-height: 1.6;
    width: 100%;
    /* Prevent horizontal scroll on all devices */
    max-width: 100vw;
    position: relative;
}

/* Mobile-specific scroll fixes - UNIFIED */
@media (max-width: 1024px) {
    html {
        /* No horizontal scroll whatsoever */
        overflow-x: hidden;
        max-width: 100vw;
        height: auto;
    }

    body {
        /* Ensure body doesn't exceed viewport width */
        width: 100%;
        max-width: 100%;
        overflow-x: hidden;
        /* Only prevent horizontal overscroll, allow vertical */
        overscroll-behavior-x: none;
        /* Remove position relative for smoother scroll */
        position: static;
        /* Enable momentum scrolling on all mobile */
        overflow-y: scroll;
        -webkit-overflow-scrolling: touch;
        /* Allow natural scroll without jerky stops */
        scroll-behavior: auto;
    }

    /* Fix scroll for neon-container on mobile */
    .neon-container {
        min-height: auto !important;
        height: auto !important;
        display: block !important;
        overflow: visible !important;
        position: static !important;
    }

    /* Desactivar grid animado en mobile - interfiere con scroll */
    .neon-grid-bg::before {
        display: none !important;
    }

    /* Elementos hijos - liberar restricciones */
    .neon-section,
    .rules-container,
    .pieces-grid,
    .piece-card,
    .special-moves-grid,
    .about-content,
    .highlight-box,
    .stats-grid {
        overflow: visible !important;
        position: relative !important;
    }

    /* Backgrounds fijos seguros */
    .top-left-bg-image {
        pointer-events: none !important;
    }

    /* Pseudo-elementos no deben interferir */
    .piece-card::before {
        pointer-events: none !important;
    }

    /* Remover tap highlights molestos */
    * {
        -webkit-tap-highlight-color: transparent;
    }
}

/* ===============================
   🎮 LAYOUT COMPONENTS
=============================== */
.neon-container {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: var(--space-lg);
    min-height: 100vh;
    position: relative;
}

.neon-section {
    width: 100%;
    max-width: 1400px;
    margin: var(--space-lg) 0;
    position: relative;
    z-index: 10;
}

/* Grid Background Effect */
.neon-grid-bg::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image: 
        linear-gradient(rgba(0, 255, 255, 0.15) 1px, transparent 1px),
        linear-gradient(90deg, rgba(0, 255, 255, 0.15) 1px, transparent 1px);
    background-size: 40px 40px;
    pointer-events: none;
    animation: neonGridMove 25s linear infinite;
}

@keyframes neonGridMove {
    0% { transform: translate(0, 0); }
    100% { transform: translate(40px, 40px); }
}

/* ===============================
   📝 TYPOGRAPHY
=============================== */
.neon-title {
    font-size: 4.5rem;
    font-weight: 900;
    letter-spacing: 0.15em;
    background: linear-gradient(45deg, var(--neon-magenta), var(--neon-green), var(--neon-blue), var(--neon-orange));
    background-size: 300% 300%;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    animation: neonGradientShift 4s ease-in-out infinite;
    filter: drop-shadow(var(--glow-large) var(--neon-cyan));
    text-transform: uppercase;
    text-align: center;
}

.neon-subtitle {
    font-size: 1.4rem;
    color: var(--neon-cyan);
    letter-spacing: 0.2em;
    text-shadow: var(--glow-medium) var(--neon-cyan);
    animation: neonPulse 3s ease-in-out infinite;
    text-transform: uppercase;
    text-align: center;
    margin-top: var(--space-sm);
}

.neon-heading {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--neon-cyan);
    text-shadow: var(--glow-medium) var(--neon-cyan);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-bottom: var(--space-sm);
}

.neon-text {
    color: var(--text-secondary);
    font-size: 1rem;
    line-height: 1.6;
}

@keyframes neonGradientShift {
    0%, 100% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
}

@keyframes neonPulse {
    0%, 100% { opacity: 0.7; text-shadow: var(--glow-medium) var(--neon-cyan); }
    50% { opacity: 1; text-shadow: var(--glow-large) var(--neon-cyan); }
}

/* ===============================
   🔘 BUTTON COMPONENTS
=============================== */

/* Pills/Rounded Buttons */
.neon-pill {
    padding: 0.8rem 2rem;
    background: rgba(0, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    border: 3px solid var(--neon-cyan);
    border-radius: var(--radius-pill);
    color: var(--neon-cyan);
    font-family: 'Orbitron', monospace;
    font-weight: 700;
    font-size: 1rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    cursor: pointer;
    transition: all var(--transition-normal);
    position: relative;
    overflow: hidden;
    box-shadow: inset 0 0 0 0 var(--neon-cyan), var(--glow-small) var(--neon-cyan);
    text-decoration: none;
    display: inline-block;
    text-align: center;
}

.neon-pill:hover {
    color: var(--dark-bg);
    box-shadow: inset 400px 0 0 0 var(--neon-cyan), var(--glow-large) var(--neon-cyan);
    transform: translateY(-3px) scale(1.05);
    border-color: white;
    letter-spacing: 0.15em;
}

.neon-pill.primary {
    background: rgba(255, 0, 128, 0.1);
    border-color: var(--neon-magenta);
    color: var(--neon-magenta);
    box-shadow: inset 0 0 0 0 var(--neon-magenta), var(--glow-small) var(--neon-magenta);
}

.neon-pill.primary:hover {
    box-shadow: inset 400px 0 0 0 var(--neon-magenta), var(--glow-large) var(--neon-magenta);
}

.neon-pill.secondary {
    background: rgba(0, 255, 128, 0.1);
    border-color: var(--neon-green);
    color: var(--neon-green);
    box-shadow: inset 0 0 0 0 var(--neon-green), var(--glow-small) var(--neon-green);
}

.neon-pill.secondary:hover {
    box-shadow: inset 400px 0 0 0 var(--neon-green), var(--glow-large) var(--neon-green);
}

/* Arcade Retro Buttons (80s Style) */
.neon-arcade-btn {
    padding: 1.2rem 3rem;
    font-size: 1.3rem;
    font-weight: 900;
    border: none;
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: all var(--transition-fast);
    text-transform: uppercase;
    letter-spacing: 0.2em;
    position: relative;
    overflow: hidden;
    font-family: 'Orbitron', monospace;
    
    /* Retro 80s Shadow Stack */
    box-shadow: 
        0 6px 0 #333,
        0 8px 0 #222,
        0 10px 0 #111,
        0 12px 20px rgba(0,0,0,0.4);
}

.neon-arcade-btn:active {
    transform: translateY(6px);
    box-shadow: 
        0 0px 0 #333,
        0 2px 0 #222,
        0 4px 0 #111,
        0 6px 10px rgba(0,0,0,0.4);
}

.neon-arcade-btn.red {
    background: linear-gradient(to bottom, #ff6b6b 0%, #ff5252 50%, #d32f2f 100%);
    color: white;
    text-shadow: 0 2px 0 #b71c1c;
}

.neon-arcade-btn.red:hover {
    background: linear-gradient(to bottom, #ff8a80 0%, #ff6b6b 50%, #ff5252 100%);
    box-shadow: 
        0 6px 0 #333,
        0 8px 0 #222,
        0 10px 0 #111,
        0 12px 25px rgba(255,107,107,0.4);
}

.neon-arcade-btn.blue {
    background: linear-gradient(to bottom, #4fc3f7 0%, #29b6f6 50%, #0288d1 100%);
    color: white;
    text-shadow: 0 2px 0 #01579b;
}

.neon-arcade-btn.blue:hover {
    background: linear-gradient(to bottom, #81d4fa 0%, #4fc3f7 50%, #29b6f6 100%);
    box-shadow: 
        0 6px 0 #333,
        0 8px 0 #222,
        0 10px 0 #111,
        0 12px 25px rgba(79,195,247,0.4);
}

/* Small Play Button */
.neon-play-btn {
    background: linear-gradient(45deg, var(--neon-magenta), var(--neon-orange));
    border: none;
    color: white;
    padding: 0.8rem 2rem;
    border-radius: 25px;
    font-family: 'Orbitron', monospace;
    font-weight: 700;
    text-transform: uppercase;
    cursor: pointer;
    transition: all var(--transition-normal);
    box-shadow: var(--glow-medium) var(--neon-magenta);
}

.neon-play-btn:hover {
    transform: translateY(-3px) scale(1.1);
    box-shadow: var(--glow-large) var(--neon-magenta);
    background: linear-gradient(45deg, var(--neon-orange), var(--neon-magenta));
}

/* Coming Soon Button */
.neon-play-btn.coming-soon-btn {
    background: linear-gradient(45deg, #666666, #999999);
    color: #cccccc;
    cursor: not-allowed;
    opacity: 0.6;
    box-shadow: none;
}

.neon-play-btn.coming-soon-btn:hover {
    transform: none;
    box-shadow: none;
    background: linear-gradient(45deg, #666666, #999999);
}

/* ===============================
   🃏 CARD COMPONENTS
=============================== */
.neon-card {
    background: linear-gradient(145deg, var(--dark-surface), var(--dark-surface-glass));
    border: 3px solid;
    border-image: linear-gradient(45deg, var(--neon-magenta), var(--neon-cyan), var(--neon-green)) 1;
    padding: var(--space-lg);
    border-radius: var(--radius-lg);
    text-align: center;
    transition: all var(--transition-slow);
    cursor: pointer;
    position: relative;
    overflow: hidden;
    backdrop-filter: blur(10px);
}

.neon-card::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: linear-gradient(45deg, transparent, rgba(255, 255, 255, 0.15), transparent);
    transform: rotate(45deg) translateX(-100%);
    transition: all 0.8s ease;
}

.neon-card:hover::before {
    transform: rotate(45deg) translateX(100%);
}

.neon-card:hover {
    transform: translateY(-15px) scale(1.02);
    box-shadow: var(--glow-large) var(--neon-cyan);
    border-image: linear-gradient(45deg, var(--neon-cyan), white, var(--neon-magenta)) 1;
}

.neon-card-icon {
    font-size: 3rem;
    margin-bottom: var(--space-sm);
    filter: drop-shadow(var(--glow-medium) currentColor);
}

.neon-card-icon.large {
    font-size: 4.5rem;
    animation: neonBounce 2s ease-in-out infinite;
}

@keyframes neonBounce {
    0%, 100% { transform: translateY(0) rotateZ(0deg); }
    50% { transform: translateY(-10px) rotateZ(5deg); }
}

/* ===============================
   🚧 COMING SOON STYLES
=============================== */
.neon-card.coming-soon {
    opacity: 0.7;
    filter: grayscale(50%);
    position: relative;
    cursor: default;
}

.neon-card.coming-soon:hover {
    transform: translateY(-5px) scale(1.01);
    opacity: 0.8;
    filter: grayscale(30%);
    animation: comingSoonShake 0.5s ease;
}

@keyframes comingSoonShake {
    0%, 100% { transform: translateY(-5px) scale(1.01) rotateZ(0deg); }
    25% { transform: translateY(-5px) scale(1.01) rotateZ(-1deg); }
    75% { transform: translateY(-5px) scale(1.01) rotateZ(1deg); }
}

.coming-soon-overlay {
    position: absolute;
    top: 0;
    right: 0;
    z-index: 10;
}

.coming-soon-badge {
    background: linear-gradient(45deg, var(--neon-yellow), var(--neon-orange));
    color: var(--dark-bg);
    padding: 0.4rem 1rem;
    border-radius: 0 var(--radius-lg) 0 15px;
    font-size: 0.7rem;
    font-weight: 900;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    box-shadow: var(--glow-small) var(--neon-yellow);
    animation: comingSoonPulse 2s ease-in-out infinite;
}

@keyframes comingSoonPulse {
    0%, 100% { 
        transform: scale(1);
        box-shadow: var(--glow-small) var(--neon-yellow);
    }
    50% { 
        transform: scale(1.05);
        box-shadow: var(--glow-medium) var(--neon-yellow);
    }
}

.coming-soon-icon {
    opacity: 0.6;
    filter: grayscale(70%);
}

.neon-card.coming-soon .neon-card-icon::after {
    content: '🔒';
    position: absolute;
    bottom: -5px;
    right: -5px;
    font-size: 1.2rem;
    background: rgba(0, 0, 0, 0.8);
    border-radius: 50%;
    padding: 0.2rem;
    border: 2px solid var(--neon-yellow);
    box-shadow: var(--glow-small) var(--neon-yellow);
}

/* Notification for coming soon games */
.coming-soon-notification {
    position: fixed;
    top: 100px;
    left: 50%;
    transform: translateX(-50%);
    background: linear-gradient(45deg, var(--neon-yellow), var(--neon-orange));
    color: var(--dark-bg);
    padding: 1rem 2rem;
    border-radius: var(--radius-pill);
    font-weight: 700;
    font-size: 1rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    box-shadow: var(--glow-large) var(--neon-yellow);
    z-index: 10000;
    animation: notificationSlideIn 0.5s ease, notificationSlideOut 0.5s ease 2s;
    opacity: 0;
    pointer-events: none;
}

@keyframes notificationSlideIn {
    0% { 
        opacity: 0;
        transform: translateX(-50%) translateY(-20px);
    }
    100% { 
        opacity: 1;
        transform: translateX(-50%) translateY(0);
    }
}

@keyframes notificationSlideOut {
    0% { 
        opacity: 1;
        transform: translateX(-50%) translateY(0);
    }
    100% { 
        opacity: 0;
        transform: translateX(-50%) translateY(-20px);
    }
}

/* ===============================
   🎲 CHESS PIECES
=============================== */
.neon-pieces {
    display: flex;
    gap: var(--space-md);
    flex-wrap: wrap;
    justify-content: center;
    margin: var(--space-lg) 0;
}

.neon-piece {
    width: 70px;
    height: 70px;
    background: linear-gradient(135deg, var(--neon-magenta), var(--neon-blue));
    border: 3px solid var(--neon-cyan);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2.5rem;
    animation: neonFloat 4s ease-in-out infinite;
    cursor: pointer;
    transition: all var(--transition-normal);
    box-shadow: var(--glow-medium) var(--neon-cyan);
    position: relative;
}

.neon-piece:nth-child(2n) {
    animation-delay: -2s;
    background: linear-gradient(135deg, var(--neon-green), var(--neon-orange));
    border-color: var(--neon-yellow);
    box-shadow: var(--glow-medium) var(--neon-yellow);
}

.neon-piece:hover {
    transform: scale(1.3) rotateZ(15deg);
    box-shadow: var(--glow-large) currentColor;
    border-color: white;
}

@keyframes neonFloat {
    0%, 100% { transform: translateY(0px) rotateZ(0deg); }
    50% { transform: translateY(-12px) rotateZ(8deg); }
}

/* ===============================
   🎯 UI ELEMENTS
=============================== */

/* Coin Counter */
.neon-coin-counter {
    position: fixed;
    top: 20px;
    right: 20px;
    background: linear-gradient(135deg, rgba(0,0,0,0.9), rgba(26,0,51,0.8));
    padding: 0.8rem 1.5rem;
    border-radius: 30px;
    border: 3px solid var(--neon-yellow);
    color: var(--neon-yellow);
    font-weight: 700;
    display: flex;
    align-items: center;
    gap: 0.8rem;
    box-shadow: var(--glow-medium) var(--neon-yellow);
    backdrop-filter: blur(10px);
    z-index: 1000;
}

.neon-coin-icon {
    width: 25px;
    height: 25px;
    background: var(--neon-yellow);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--dark-bg);
    font-weight: 900;
    animation: neonCoinSpin 3s linear infinite;
    box-shadow: var(--glow-small) var(--neon-yellow);
}

@keyframes neonCoinSpin {
    0% { transform: rotateY(0deg); }
    100% { transform: rotateY(360deg); }
}

/* Grid Layouts */
.neon-grid {
    display: grid;
    gap: var(--space-lg);
    width: 100%;
}

.neon-grid-2 { grid-template-columns: repeat(2, 1fr); }
.neon-grid-3 { grid-template-columns: repeat(3, 1fr); }
.neon-grid-auto { grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); }

.neon-flex {
    display: flex;
    gap: var(--space-md);
    flex-wrap: wrap;
    justify-content: center;
}

/* Power-up Effects */
.neon-power-up {
    position: absolute;
    width: 8px;
    height: 8px;
    background: var(--neon-green);
    border-radius: 50%;
    animation: neonPowerUpFloat 6s ease-in-out infinite;
    box-shadow: var(--glow-small) var(--neon-green);
    pointer-events: none;
}

@keyframes neonPowerUpFloat {
    0% { transform: translateY(100vh) scale(0); opacity: 0; }
    15% { opacity: 1; }
    85% { opacity: 1; }
    100% { transform: translateY(-50px) scale(1.5); opacity: 0; }
}

/* ===============================
   📱 RESPONSIVE DESIGN
=============================== */
@media (max-width: 768px) {
    .neon-title {
        font-size: 3rem;
    }
    
    .neon-subtitle {
        font-size: 1.1rem;
    }
    
    .neon-piece {
        width: 60px;
        height: 60px;
        font-size: 2rem;
    }
    
    .neon-card-icon.large {
        font-size: 3.5rem;
    }
    
    .neon-grid-2,
    .neon-grid-3,
    .neon-grid-auto {
        grid-template-columns: 1fr;
    }
    
    .neon-flex {
        flex-direction: column;
        align-items: center;
    }
    
    .neon-arcade-btn {
        font-size: 1.1rem;
        padding: 1rem 2rem;
    }
}

@media (max-width: 480px) {
    .neon-container {
        padding: var(--space-sm);
    }
    
    .neon-title {
        font-size: 2.5rem;
        letter-spacing: 0.1em;
    }
    
    .neon-card {
        padding: var(--space-md);
    }
}

/* ===============================
   🎮 UTILITY CLASSES
=============================== */
.neon-center { text-align: center; }
.neon-left { text-align: left; }
.neon-right { text-align: right; }

.neon-uppercase { text-transform: uppercase; }
.neon-lowercase { text-transform: lowercase; }

.neon-bold { font-weight: 700; }
.neon-extra-bold { font-weight: 900; }

.neon-mt-sm { margin-top: var(--space-sm); }
.neon-mt-md { margin-top: var(--space-md); }
.neon-mt-lg { margin-top: var(--space-lg); }

.neon-mb-sm { margin-bottom: var(--space-sm); }
.neon-mb-md { margin-bottom: var(--space-md); }
.neon-mb-lg { margin-bottom: var(--space-lg); }

.neon-p-sm { padding: var(--space-sm); }
.neon-p-md { padding: var(--space-md); }
.neon-p-lg { padding: var(--space-lg); }

/* Color Modifiers */
.neon-cyan { color: var(--neon-cyan); }
.neon-magenta { color: var(--neon-magenta); }
.neon-green { color: var(--neon-green); }
.neon-orange { color: var(--neon-orange); }
.neon-yellow { color: var(--neon-yellow); }
/* ===============================
   🎨 TOP-LEFT BACKGROUND IMAGE - RESPONSIVE
=============================== */
.top-left-bg-image {
    position: fixed;
    top: 20px;
    left: 20px;
    z-index: 0;
    pointer-events: none;
}

.top-left-bg-image img {
    width: 390px;
    height: auto;
    opacity: 0.35;
    filter: drop-shadow(0 0 25px rgba(0, 217, 255, 0.4));
    border-radius: 15px;
    transition: all 0.3s ease;
}

/* Tablets: reducir tamaño */
@media (max-width: 1024px) {
    .top-left-bg-image img {
        width: 280px;
        opacity: 0.3;
    }
}

/* Mobile: hacerlo más chiquito */
@media (max-width: 768px) {
    .top-left-bg-image {
        top: 10px;
        left: 10px;
    }
    .top-left-bg-image img {
        width: 100px;
        opacity: 0.25;
        filter: drop-shadow(0 0 15px rgba(0, 217, 255, 0.3));
    }
}

/* Mobile pequeño: ocultar completamente */
@media (max-width: 480px) {
    .top-left-bg-image {
        display: none;
    }
}

/* Floating animation for joystick icons */
@keyframes float {
    0%, 100% {
        transform: translateY(0px);
    }
    50% {
        transform: translateY(-10px);
    }
}